It is sad indeed. But as I see it they had very few alternatives after being swindled.
Redesign the Pro1(x) using as much as they can of the existing with the remaining money.
Await the months or years a trial may take, and hope they win, and HOPE they can buy and stock whatever 835 they could find (if any!), and then have someone making the pcbs if they win - a high risk gamble, and the device would likely be quite outdated then, and no income while you and others were waiting.
Start the development of a totally new Pro2, my guess would be it would reach us after 2021. and m